---
layout: docs
page_title: Telemetry
description: |-
  Learn about the telemetry data available in Vault
---

# Telemetry

The Vault server process collects various runtime metrics about the performance
of different libraries and subsystems. These metrics are aggregated on a
10-second interval and retained for one minute in memory. High-cardinality
metrics, like `vault.secret.kv.count`, report every 10 minutes or at an interval
configured with in the `telemetry` stanza.

Telemetry from Vault must be streamed and stored in metrics aggregation
software to monitor Vault and collect durable metrics.

@include 'telemetry/supported-aggregation-agents.mdx'

<Tip title="Start with key health metrics">

  The [Well-Architected Framework](/well-architected-framework) documentation
  includes a best practices guide on
  [key Vault metrics for common health checks](/well-architected-framework/reliability/reliability-vault-monitoring-key-metrics).
  We recommend reviewing the key metric recommendations to identify metrics you
  may want to start monitoring immediately.

</Tip>

## Working with raw telemetry data

You can view raw telemetry data for debugging purposes by interrupting the Vault
process with `USR1` (on *nix) or `BREAK` (on Windows). When the Vault process
receives this signal, it dumps telemetry data for the last 10 seconds to
`stderr`.

Raw telemetry data is prefixed with the relevant metric type:

- **`[C]`** indicates the metric is a **counter**.
- **`[G]`** indicates the metric is a **gauge**.
- **`[S]`** indicates the metric is a **summary**.

## Example raw telemetry dump

```text
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.expire.num_leases': 5100.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.num_goroutines': 39.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.sys_bytes': 222746880.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.malloc_count': 109189192.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.free_count': 108408240.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.heap_objects': 780953.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.total_gc_runs': 232.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.alloc_bytes': 72954392.000
[2017-12-19 20:37:50 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.total_gc_pause_ns': 150293024.000
[2017-12-19 20:37:50 +0000 UTC][S] 'vault.merkle.flushDirty': Count: 100 Min: 0.008 Mean: 0.027 Max: 0.183 Stddev: 0.024 Sum: 2.681 LastUpdated: 2017-12-19 20:37:59.848733035 +0000 UTC m=+10463.692105920
[2017-12-19 20:37:50 +0000 UTC][S] 'vault.merkle.saveCheckpoint': Count: 4 Min: 0.021 Mean: 0.054 Max: 0.110 Stddev: 0.039 Sum: 0.217 LastUpdated: 2017-12-19 20:37:57.048458148 +0000 UTC m=+10460.891835029
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.alloc_bytes': 73326136.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.sys_bytes': 222746880.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.malloc_count': 109195904.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.free_count': 108409568.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.heap_objects': 786342.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.total_gc_pause_ns': 150293024.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.expire.num_leases': 5100.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.num_goroutines': 39.000
[2017-12-19 20:38:00 +0000 UTC][G] 'vault.7f320e57f9fe.runtime.total_gc_runs': 232.000
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.route.rollback.consul-': Count: 1 Sum: 0.013 LastUpdated: 2017-12-19 20:38:01.968471579 +0000 UTC m=+10465.811842067
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.rollback.attempt.consul-': Count: 1 Sum: 0.073 LastUpdated: 2017-12-19 20:38:01.968502743 +0000 UTC m=+10465.811873131
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.rollback.attempt.pki-': Count: 1 Sum: 0.070 LastUpdated: 2017-12-19 20:38:01.96867005 +0000 UTC m=+10465.812041936
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.route.rollback.auth-app-id-': Count: 1 Sum: 0.012 LastUpdated: 2017-12-19 20:38:01.969146401 +0000 UTC m=+10465.812516689
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.rollback.attempt.identity-': Count: 1 Sum: 0.063 LastUpdated: 2017-12-19 20:38:01.968029888 +0000 UTC m=+10465.811400276
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.rollback.attempt.database-': Count: 1 Sum: 0.066 LastUpdated: 2017-12-19 20:38:01.969394215 +0000 UTC m=+10465.812764603
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.barrier.get': Count: 16 Min: 0.010 Mean: 0.015 Max: 0.031 Stddev: 0.005 Sum: 0.237 LastUpdated: 2017-12-19 20:38:01.983268118 +0000 UTC m=+10465.826637008
[2017-12-19 20:38:00 +0000 UTC][S] 'vault.merkle.flushDirty': Count: 100 Min: 0.006 Mean: 0.024 Max: 0.098 Stddev: 0.019 Sum: 2.386 LastUpdated: 2017-12-19 20:38:09.848158309 +0000 UTC m=+10473.691527099
```

